Solid freeform fabrication methods
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United States of America Patent
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Apr 14, 1998
Grant Date -
N/A
app pub date -
Feb 8, 1996
filing date -
Feb 8, 1996
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Abstract
A fused deposition process is used to form three-dimensional solid objects from a mixture including a particulate composition dispersed in a binder. The article is formed by depositing the mixture in repeated layers of predefined thickness, with each layer solidifying before the next adjacent layer is dispensed. Following formation and a binder removal step, the article may be at least partially densified to achieve preselected properties. The process permits three-dimensional articles to be formed relatively quickly and inexpensively, without the need for molds or other tooling.
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